Key telephone set



FIGS. 1 and 2 are respectively top and bottom plan views of a Key Telephone Set showing our new design;

FIGS. 3 and 4 are respectively front and rear elevational views thereof;

FIGS. 5 and 6 are respectively left and right elevational views thereof; and

FIG. 7 is an associated perspective view of the handset inverted and spaced apart from the stand, and a front, top and right side perspective view of the stand. 

The ornamental design for a key telephone set, as shown and described. 